Question

pls ans this 3rd question please

Answer 1

hope this image help u

Answer 2

Solution :

Given secA - tanA = 1/2----( 1 )

=> We know the Trigonometric

identity ,

sec²A - tan²A = 1

=> (secA+tanA)(secA-tanA)=1

=> (secA+tanA)×(1/2) = 1

=> secA+tanA= 2----(2)

add equations (1)&(2),we get


2secA = 1/2+2

=> 2secA = (1+4)/2

=> secA = 5/4

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